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Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2021 | May 31, 2020 | May 31, 2021 | May 31, 2020 | Feb. 28, 2021 | Nov. 30, 2020 | Feb. 29, 2020 | Nov. 30, 2019
Equity | $ 2,886,865 | $ 2,490,354 | $ 2,886,865 | $ 2,490,354 | $ 2,748,184 | $ 2,665,769 | $ 2,443,104 | $ 2,383,122
Cash equivalents | 378,500 |  | 378,500 |  |  | 508,500 |  |
Other comprehensive income (loss) | 143,400 | 52,000 | 240,400 | 111,700 |  |  |  |
Retained earnings | 2,081,288 |  | 2,081,288 |  |  | 1,868,896 |  |
Financial Service [Member] |  |  |  |  |  |  |  |
Contract assets | 22,500 |  | 22,500 |  |  | 21,500 |  |
Retained Earnings [Member] |  |  |  |  |  |  |  |
Equity | $ 2,081,288 | $ 2,255,742 | $ 2,081,288 | $ 2,255,742 | $ 1,951,657 | 1,868,896 | $ 2,211,851 | 2,157,183
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |  |
Equity |  |  |  |  |  |  |  | 1,510
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |  |
Equity |  |  |  |  |  | (226) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |
Equity |  |  |  |  |  |  |  | $ 1,510
Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] | Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |  |
Equity |  |  |  |  |  | $ (226) |  |

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